carman



(No Model.) 4 SheetsShet- 1.

O. L. GARMAN.

BRICK MACHINE.

No. 308,303. Patented Nov. 18, 1884.

4 Sheets-Sheet 2.

(No Model.)

0. L. OARMAN. BRICK MACHINE.

Patented Nov; 18, 1884.

.4 d if y'iw/e as e s z Sheets-Sheet- 3.

(No Model.)

0. L. OARMAN. BRICK MACHINE.

N0. 308 303. Patented Nov. 18, 1884.

Jmenior H wmm 4 Sheets-Sheet 4,

0.'L. OARMAN.

8 BRICK MACHINE.

Patented Nov. 18, 1884.

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NITE STATES CHARLES L. CARMAN, OF CHICAGO, ILLINOIS, ASSIGNOB, BY DIRECTAND MESNE ASSIGNMENTS, TO THE CARMAN BRICK MACHINE COMPANY, OF

SAME PLACE.

BRICK-MACHINE.

BPECIIEICATION forming part of Letters Patent No. 308,303, datedNovember 18, 1884.

Application filed February 7, 1834. (No model.)

To all whom it may concern.-

Be it known that 1, CHARLES L. CARMAN, a citizen of the UnitedStates,residing at Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Brick-Machines, ofwhich the following is a specification, to wit:

This invention relates to an improvement in brick-machines; and itconsists in certain to peculiarities of construction and arrangement ofthe same,whereby the machine is simplified and cheapened, and made topress and repress the bricks without extra handling, substantially aswill be hereinafter more fully set I 5 forth, and pointed out in theclaims.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the accompanying drawings,inwhich Figure 1 is a plan view of my machine. Fig.

-2 is a similar View with the cap-plate removed. Fig. 3 is alongitudinalsection of the machine. Fig. 4. is a cross-section of the main portionof the machine. Fig. 5 is a similar view taken through thepressure-segments,

showing a brick under operation. Fig. 6 is an enlarged detail section ofthe mold-box in the act of discharging a brick, and Fig. 7 is a 37) Viewof one end of the cap and feeding-opening. Fig. 8 is a modification.

A represents the main casting or bed of my machine, cast with the fourside wings or arms, A, and upon which is placed the slide B. This 3 5latter is a rectangular casting containing two mold boxes or openings,2), for the reception of the clay and formation of the bricks. Over thisslide is secured a cap, C, having side wings, C, of the same generalform .as the 40 base A A.

The openings I) extend across the slide, and in them are placed theplungers D D, having their rear ends formed with a nose, cl (1, and theinner ends of which form sides of the mold-boxes, while the edges orsides of the slide are formed with a rack or series of teeth, I) b,which engage with the teeth of the segment-arms E E, which are pivotedupon pins or studs a a on the ends of the wings A of I the base, and areformed with depressions e e,

for engagement with the nose (I d of the p1ungers, as will be presentlyexplained.

The bottom and rear side of each mold-box isprovided with a movablesection, F, which slides vertically in a dovetail groor e in the slide,and is upon i ts under side provided with a friction-roller, f, which,as the slide moves backward and forward, is at proper points near thecenter of the'machine caused to rise by an inclined way, a, on the baseor bed casting, as in Fig. 3, till the bottom section is ona level withthe top of the slide, and the pressed brick may be readily removed.

The under side of the plungers at their outer ends, d, are provided withsmall friction-rollers d, and the bed is at each end cast with a cam orincline d on its outer ed e which draws back the plungers sufficient toadmit of the charging of the box with the material, and at or near thecenter the box is also cast with smaller inclines or' cams (2*, whichslightly withdraw the plungers after pressing, in order to free thebrick and allow the section F to rise for discharging.

It will be evident, on an inspection of the drawings, that when theslideis at the extreme end of its stroke, one of the mo1d-boxes will be underthe feed-opening of the cap, and

clay may be fed into it from any desired chute or receptacle locatedabove the same. As the slide begins its reverse movement, the moldboxand plungers are carried beneath the cap, and the rack moves the coggedsegments with it. It will be observed, however, that the nose of theplunger and the corresponding depressions in the segments do not contacttill the mold-box is entirely beneath the cap and the clay cut off. Theplungers are then forced inward, and the material begins to be pressed.By an inspection of the drawings, Fig. 2, it will be seen that thepressure thus applied is in the nature of a toggle, and results in agreater pressure and less inward movement of the plungers as the slideapproaches a line through the pivotal points of the pressing segments,and thus obtains a motion which gives the best results. After passingthis line the pressure is relaxed as the segments move drawn slightlyback by the small cams on the 7 bed to release the brick, and at thesame time the'movable section of the mold-box is lifted and the brickdischarged through a slot, 0, in the cap or covering plate, where it maybe removed by an attendant, if desired. The opposite mold-box is now ina position for filling, and the same process is repeated, making twobricks at each complete stroke of the slide. It will be seen that thisarrangement gives a minimum of friction and wear, using a rollingsurface wherever force is applied, and causing less liability of unevenwear than would be the case if the pressure were obtained bycam-surfaces.

The machine may be made to press the brick at one end and re-press inthe other, without handling or feeding the pressed brick, by the deviceshown in Figs. 6 and 7. In the slot 0 of the cap-plate is secured a thinsteel plate, G, which, when the movable section of the mold-box islifted and carried forward, slides beneath the brick, as in Fig. 6, andwhen the section is retracted the brick is left upon the plate. The nextsucceeding brick shoves the first forward till it is received by thesection of the other mold-box, and carried back' through the oppositeend of the machine, be ing re-pressed and discharged at that end throughthe feed-opening, by means of a small cam-track, 9, (shown in dottedlines in Fig. 7,) placed at this point to lift the discharge-section.made removable, and the machine may in a few moments be altered to suitthe requirements of the business. v

I do not regard the cogged rack on the slide and teeth on the segmentsas absolutely re quired, as there would be sufficient friction of theparts to carry the segments and slide back and forth together, butprefer to add these features, as they do not materially increase thecost or friction of the machine, and make the registry of segment andplunger absolutely sure.

The same movement and pressure of the plungers may be obtained by thedevice shown in Fig. 8, which shows the segments replaced by a linkpivoted to the plunger and having a slotted connection with the pins onI the ends of the side wings, A, and I regard this modification as themechanical equivalent of the device previously described; but I preferthe former, as the slotted link will not act so smoothly, but cause aslight jar or shock at the point of initial pressure, which I desire toavoid as injurious to the machinery.

Having thus fully described my invention, what I claim as new, anddesire to secure b Letters Patent, is-- 1. In a brick machine, a slidecontaining the pressure-chambers, having a reciprocat- This cam-trackand the steel plate are ing motion beneath a stationary cap or cover,substantially as shown and described.

2. Ina brick-machine, a slide carrying the pressure-chambers and theirplungers, and means, substantially as described, for giving it areciprocating motion upon the bed or main frame, in combination with atoggle link or lever engaging both the main frame and the plungers,substantially as and for the purpose set forth. v

3. In a brick machine, a reciprocating pressure-chamber provided withsuitable plungers, in combination with a bed or main frame havingtoggle-connections for advancing the plungers, and cams or inclines forretracting them, substantially as shown and described.

4. In a brick machine, a reciprocating slide carrying the pressurechambers and their plungers, in combination with rocking segmentspivoted on the main frame beside the slide and moving therewith, wherebythe initial movement of the plungers is smooth and without jar,substantially as shown and described.

5. In a brick machine, a reciprocating pressure-chamber carryingsuitable plungers, in combination with a rolling surface, past which theslide moves, and by which the plungers are advanced, substantially asshown and described. 7

6. In a brick machine, a reciprocating slide. carrying the. pressurechambers and their plungers, and having an L-shaped section of thebottom, and one end of said chamber movable and provided with africtionroller, in combination with the main frame formed or providedwith inclines for retracting the plungers to free the brick, andinclines forlifting the movable section to discharge it, substantiallyas and for the purpose set forth.

7. In a brick-machine, a main frame provided with a cap or coveringplate, beneath which the mold-boxes are reciprocated, and provided withan opening through the cap at the extremity of motion of the boxes, incombination with a movable section in the moldboX, and means,substantially as described, for lifting it through the opening in thecap for discharging the brick, substantially as and for the purpose setforth.

8. In a brick machine, a reciprocating slide carrying thepressure-chambers, having a movable section therein and means forlifting it at stated intervals, in combination with a covering plate,beneath which the slide moves, formed with a discharge opening, throughwhich the brick is lifted by the movable bottom, and a thin plate or.blade secured within the discharge-opening of the cap and adapted toslide beneath the brick, substantially as and for the purpose set forth.

' 9. In a brick-machine, a main frame pro- ICC IIO

vided with a feed-opening at each end and a the machine to discharge thebricks, substan-' discharge-opening in its center, in c0mbinatially asshown and described. 1 10 tion with a pair of reciprocating pressure- Intestimony whereof I affix my signature in chambers provided withsuitable plnngers, presence of two witnesses.

and each having a movable section, means for CHARLES L. GARMAN.advancing and retracting the plungers to Witnesses: press the brick, andmeans for lifting the m0vi CHAS. KRESSMANN,

able sections of said chambers at the center of l i WALTER S. MOARTHUR.

